Dasher.



I PATENTED SEPT. 19, 1905. I. M. MURPHY. DASHER APPLICATION FILED DIS-0.23. 1904.

- fill/11701: 2 W

cm. Mk

UNIT ED STATES IDA M. MURPHY, OF NEW' YORK, N. Y.

DA'SHER.

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed December 23,1904. Serial No. 238,067.

To all whom, it may concern.-

Be it known thatI, IDA M. MURPHY, a citizen of the United States, and a resident of the borough of Manhattan, in the city and State of New York. have invented new and useful Improvements in Dashers, of which the following is a specification.

The object of my present invention is to provide certain improvements in the form and construction of a dasher whereby the dasher when in use will produce better results than has heretofore been possible, the dasher at the same time being simple in construction, cheap to manufacture, and readily cleansed.

In the accompanying drawings, Figure 1 is a top view of the dasher and its shaft-fitting. Fig. 2 is a side view of the same, and Fig. 3 is a vertical central section taken in the plane of the line A A of Fig. 2.

The dasher comprises a body portion 1 and wings 2 projecting therefrom. In the present instance the dasher is shown as provided with two wings projecting from the body upon opposite sides of the same.

The body 1 is provided with a neck 3, fitted to receive a hollow shaftfitting 4, which shaft-fitting is in turn provided with a reduced neck 5 and a set-screw 6 for the attachment of the dasher to a suitable shaft. The shaftfitting 4 is provided with one or more openings 7 for permitting the free inlet of air to its interior. 4 The body portion 1 of the dasher has a vertical air-duct 8 leading therethrough, which air-duct 8 is intersected by a horizontal air-duct 9 leading from front to back through the body portion about midway between its top and bottom.

Each of the wings 2 is of wedge shape in horizontal section and is provided with a flat receding outer face 10.

Considering the dasher with respect to its direction of rotation in operation-viz, in the direction indicated by the arrows on Fig. 1- the edges formed between the flat front faces 11 of the wings and the flat receding faces 10 are farther away from the center of the dasher than the edges formed between the flat rear faces 12 of the wings and the outer faces 10. Furthermore, because of the inward inclination of the outer faces of the wings a sharper angle is formed along the forward outer edges of the wings than along the back outer edges thereof.

Horizontal holes 13 and 14 of considerable area lead through each of the wings 2 in planes above and below the plane of the horizontal hole 9 through the body portion of the dasher,

these holes 13 and 14 being parallel with the receding outer face of the wing.

The body portion 1 of the dasher is preferably rectangular in cross-section, so as to present four vertical edges 15 and vertical recesses 16 between the front and back faces of the wings and the side walls of the body portion.

The dasher constructed as above set forth is suitable for use in connection with churns or with paint-mixers or ice-cream freezers.

The dasher when in use produces a very complete agitation of the material in connection with which it is used. The air which is drawn in through the shaft-fitting and vertical hole 8 is drawn out by suction through the horizontal hole 9 in the body portion of the dasher into the mixture between the horizontal holes in the dasher-wings. Furthermore, by providing the receding outer faces for the wings I am enabled to produce a suction back of the outer front edges of the wings. The vertical edges of the body portion also serve, in connection with the vertical recesses, to produce a complete agitation of the mass adjacent to the base of the wings at a point where it has been heretofore extremely difficult to agitate the mass.

What I claim is- 1. A dasher comprising a central body portion and wings projecting therefrom, each wing having flat diverging front and back faces and a flat receding outer face forming sharp front and back outer edges, the front outer edge being farther away from the center of the dasher than the rear outer edge.

2. A dasher comprising a central body portion and wings projecting therefrom, each wing having flat diverging front and back faces and a flat receding outer face forming sharp front and back outer edges, the front outer edge being farther away from the center of the dasher than the rear outer edge, the said wing having a horizontal hole leading from front to rear therethrough.

3. A dasher comprising a central body portion and wings projecting therefrom, the body portion having a vertical hole therein and a horizontal hole therethrough between the wings in communication with the vertical hole, each wing having flat diverging front and back faces and a flat receding outer face forming front and back front edges, the front outer edge being farther away from the center of the dasher than the rear outer edge.

tion being rectangular in cross-section, thereby forming a plurality of vertical edges and vertical recesses between the front and back faces of the wings and the sides of the body portion, the said wings having horizontal holes leading therethrough from front to back, and the body portion having a vertical hole thereinand having a horizontal hole communicating with the vertical hole and extended through the body portion to the spaces between the said wings.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 19th day of December, 1904:.

IDA M. MURPHY. Witnesses:

FREDK. HAYNEs, HENRY THIEME. 

